Universe's first stars left unique chemical signatures

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LIVERMORE, Calif., July 1 (UPI) -- Researchers at Lawrence Livermore National Laboratory are on the case of the missing alpha star signatures. Scientist Brian Bucher recently made a breakthrough in predicting what the universe's first generation of stars might look like -- chemically speaking.

The cosmos' original stars were different than today's stars. They didn't have the plethora of heavy elements common in the modern universe at their disposal. They had to make their own.

Thanks to their inventiveness, the elements that make life possible are now littered throughout the cosmos. But when the first stars were born, just 400 million years after the Big Bang, there was only hydrogen and helium. Fusion in the bellies of these original stars converted the two elements into an array of heavier ones -- oxygen, nitrogen, carbon, iron and others.

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